Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing the claimed design; and,

FIG. 2 is a front view of a display screen or portion thereof with icon showing the claimed design in accordance with a second embodiment.

Broken lines depict a display screen or portion thereof, or environment, and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described herein. 